Photographic-printing apparatus.



J. A. MEISER.

PHOTOGRAPHIO PRINTING APPARATUS.

APPLICATION FILED OCT. 20, 1908.

' Patented Jan. 16, 1912.

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J. A. MEISER.

PHOTOGRAPHIG PRINTING APPARATUS.

' APPLICATION FILED OCT. 20, 1908. 1,014,767. Patented Jan.16,1912.

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J. A MEISER. PHOTOGRAPHIO PRINTING APPARATUS.

APPLIGATION FILED OCT. 20, 1908.

1 ,014,767, Patented Jan. 16,1912.

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PHOTOGRAPHIG PRINTING APPARATUS.

APPLICATION FILED new. 20, 1908.

1,014,767. Patented Jan. 16, 1912,

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WITNESSES.

J. A. MEISER.

PHOTOGRAPHIG PRINTING APPARATUS.

APPLICATION FILED OUT. 20, 1908.

Patented Jan. 16, 1912.

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UNITED STATES PATENT OFFICE.

JESSE A. MEISER, OF EUREKA, CALIFORNIA, ASSIGNOR OF ONE-FOURTH T0 JOHNA. PRENTICE, OF EUREKA, CALIFORNIA.

PHOTOGRAPI-IIC-PRINTING APPARATUS.

To all whom it may concern:

Be it known that I, JESSE A. MEISER, a citizen of the United States,residing at Eureka, in the county of Humboldt and State'of California,have invented certain new and useful Improvements inPhotographic-Printing Apparatus, of which the following is aspecification.

My invention relates to the class of photo-' graphic-printing apparatusin which means are provided for framing the negative and sensitizedsheet together, with contacting pressure, and then exposing them.

The object of my invention is to provide a simple and eflicientapparatus of this class, adapted for rapid work.

To this end my invention consists in the novel constructions,arrangements and combinations which I shall hereinafter fully describe,by reference to the accompanying drawings in which- Figure 1 is atopview of my apparatus. Fig. 2 is a side view of the same, with oneside of the body frame 1 removed, the upper parts of the apparatus beingshown in elevation. Fig. 3 is a side view of the pressure-platen, thedotted lines showing its normal elevation. Fig. 4 is a detail of thespring control of the pressure-platen. Fig. 5 is a bottom plan of theshutter-operating mechanism. Fig. 6 is a top-edge view of the same,showing the setting of the shutter closing devices. Fig. 7 is aview-showing the shutters open. Fig. 8 is a view showing the shutterclosing mechanism in a position ready to be reset. Fig. 9 is a de tailof the shifter closing mechanism reset, the shutters being ready toopen. Fig. 10 is a detail of the same when the shutters are open. Fig.11 is a detail of the same when the shutters are closed by the trippingof the closing mechanism. Fig. 12 is a plan of the printing-frame kit.Fig. 13 is a section of one corner of the same.

1, in Figs. 1 and 2, is a body-frame, having two openings 2 and 3, inits inner portion or in its top according to whether the frame is usedin an upright position in a window, or in a horizontal position over anartificial light. For convenience, the descriptive terms of positionherein used, will be those which assume the use of the apparatus in ahorizontal position as the drawings show it. The opening 2, I shall callSpecification of Letters Patent.

Application filed October 20, 1908.

Patented Jan. 16, 1912.

Serial No. 458,711.

the sight opening, its purpose being to enable the operator to properlyplace and relatively adjust the sensitized sheet and the negative; andthe opening 3 I shall call the exposure opening, its function being toadmit light to the exposed negative and paper. The top of the body-frameis provided or formed with side guides 4 extending lengthwise past bothopenings 2 and 3. In these guides is fitted and adapted to slide, theprinting frame 5, which is provided with a handle 6 whereby it may beconveniently manipulated. This printing frame 5 is adapted to travelfrom the sight opening 2 to the exposure opening 3 and back again.

7 is a pressure-platen, the face of which has a suitable pad 8. Theoperation of the platen is automatic both as to pressure and release,and is effected by the following construction: 9 is a bracket fixed tothe body frame 1, the arm 9 of said bracket overlying the platen. Theplaten is suspended from the extremity of the bracket-arm by a link 10,which at one end is pivoted to the back of the platen and at its otherend is pivoted to the lower end of a screw 11 threaded through thebracket-arm, so that the plane in which the platen is suspended can benicely varied and adjusted, in order to regulate the pressure. From oneedge of the platen projects a pin 12, which plays freely in a socket inthe bracket 9. See Fig. 1. Around this pin is a spring 13, the effect ofwhich is to normally throw the platen over to one extremity of its arcof movement in which position its suspending link 10 is at an angle tothe perpendicular, and said platen is limited in this position by stops14., secured to the body frame 1 and overlapping the edge of the platen.In this position the platen lies in its highest plane, and it is obviousthat if it be swung through its arc of movement, it will, due to the cameffect of the link 10 descend from said plane, to the point at which thelink is perpendicular to it as seen in Fig. 3, at which point it isagain limited by the vertical portions of the stops 14. In thisposition, the spring 13 is compressed, and when the platen is released,the spring will return it on its rising movement. Secured to the edge ofthe platen are downwardly projecting stops 14, Fig. 2.

15 is a cross roller which is suspended from a bracket 16, secured tothe body-frame 1. The roller is a spring controlled one, like a curtainroller. The means for suspending the roller are yielding ones, andcomprise end hangers 17, Fig. 2, which slide freely in the bracket, arecontrolled by springs 18, and adjusted by nuts 19 on their upper ends,Secured to and adapted to wind upon the roller 15 is apressure-equalizing pad 20 of some suitable material. Plush or thickvelvet answers very well for this pad; the pile or nap being best turnedoutermost. The edge of this pad is secured to the edge of theprinting-frame 5, Fig. 2.

In the sight-opening 2 is fitted a red glass 21, Fig. 2, or-othertranslucent non-actinic plate or sheet. In the exposure opening arefitted the shutters 22, Fig. 2.

It will now be well to describe the operation up to this point.

The negative 23, Fig. 1, is placed in the frame 5, when said frame liesover the sightopening 2. The sensitized sheet 2 1 is then laid upon thenegative, the light coming through the non-actinic plate 21 being ampleto show all that is needed for proper adjustment. Now the handle 6 isgrasped and the printing frame 5 is moved over to the right. In passingunder the spring depressed roller 15, the pressure-equalizing pad 20 ofsaid roller, being carried along by the frame to which it is attached,immediately grips down upon the sensitized sheet and holds it on thenegative, and as the printing frame continues on its ourney said padunwinds from the roller and finally covers the entire sensitized sheet.The printing-frame by this time has pass-ed completely under thenormally elevated pressure platen, and when nearly at the limit of itsstroke the edge of said frame comes in contact with the downwardlyprojecting stops 1% on the edge of the platen. This contact, under thefurther travel of the printing frame to complete its movement, hastheeffect of carrying the platen with it, and the platen hanging fromits suspending link 10 will swing down upon the underlying equalizingpad, sensitized sheet and negative, and thus apply the necessary andequally distributed contact pressure. At this point the printing-frameis limited by the end shoulder of the body-frame-and the platen islimited by its stops 141-. The shutters 22 being opened, as I shallpresently explain, the negative is exposed to the white light comingthrough opening 3. lVhen the time of exposure is complete, the shutters22 close and the printing-frame is moved back to its initial position.At the beginning of its return movement, as soon as it relieves theplaten, the latter will return to its normal elevated position, underthe influence of the spring 13. The equalizing pad will rewind on itsroller and when the printing-frame is at its initial point, thesensitized sheet is removed and another placed on the negative for arepe tition of the operation.

In the foregoing description 1 have assumed the proper and timelyopening and closing of the exposure opening-shutters 22. A shutter tocontrol the exposure-opening is a necessity, not so much for theaccurate timing of the exposure, (though this, of course, it does) asfor the prevention of white light entering the apparatus and injuringthe sensitized paper when being fitted to the printing-frame. Myinvention contemplates the automatic control of the exposure shutters bythe movement of the printing-frame to and from its printing station. Forthis purpose suitable controls and trips are provided, a good form ofwhich is as follows: The shutter 22 is a centrally divided overlappingone, comprising two leaves. Each leaf is provided on its outer edge witha pintle 25, Fig. 5, which is journaled in suitable bearings 26 securedunder the bodyframe top, thereby forming hinges. One end of each pintleis formed or provided with a crank 27, the two cranks being united by aconnecting link 28 freely slotted over the cranks, as seen in Fig. 6 tocompensate for their are of movement and to cause them to operate inunison. A yoke member 28, seen best in Fig. 5, secured to the connectinglink 28, serves to stiffen said link. Pivoted to the body frame is anarm 29, Figs. 9, 10 and 11, the other end of which is suitably connectedwith the connecting link 28 as by passing through it as shown. A spring30 bears upon the connecting link and serves to throw said link.thereby, through the cranked pintles 25, throwing said shutter leavesopen. Pivoted in the body-frame top is a trip-lever 31, Figs. 6, 7 and8, controlled by a spring 32, Fig. 7. The lower end of tnis lever isformed with a beveled catch which is adapted to engage the arm 29 of thelink 28 and to normally hold it in such position that the shutter-leavesare closed. The upper end 34 of the trip-lever 31 projects above thebody-frame top and lies in the path of a stud 35 fixed in the edge ofthe printing frame 5, Fig. 1. The operation of these parts is asfollows. The shutters being closed, which is the position of Fig. 6, areheld so by the trip lever 31, the beveled catch 33 of which engages theconnecting link 28 of the shutter pintles. hen the printing-frame 5 ismoved over to its exposure position and just before its limit isreached, the stud 35 in its edge comes in contact with the upper end 3aof the triplever 31, and by pushing it over, effects the release of itscatch 33 from the connecting link 28. The spring 30, thereupon, throwsthe link 28 down and swings the shutters open.

r 36, Fig. 2, are fixed buffers to cushion the shutters at their limitof opening movement.

Now follows the description of the mechanism for closing the shutters,said mechanism being also dependent upon the movement of theprinting-frame.

37 is a lever pivoted under the body-frame top and passing behind orunderneath the end of the arm 29 of the connecting link 28, as seen inFigs. 9, 10 and 11. The free end of this lever is controlled by a spring38, the normal tendency of which is to press said lever up. This end ofthe lever is, however, normally held down by a catchshoulder 39 on apivoted trip-lever 40, the other end of which is connected with aslide-bar 41. A spring 42 controls the triplever 40, keeping it normallypressed to its engagement. The slidebar 41 is operated by a crank arm43, Fig. 5, which bears against a stud 44 of said bar. The crankarm 43is carried by a rock-pin 45 mounted to oscillate in the top of thebody-frame. The upper end of the rock-pin carries a crank arm 46, Fig.1, which lies in the path of a springcontrolled trigger 47, which ispivoted to the edge of the printing-frame 5. This trigger is soconstructed and mounted as to yield in one direction, but to be rigid inthe other direction, these directions being such that in the outwardmovement of the printing-frame, the trigger yields to the contact withthe crank-arm 46 of the rockpin 45 and passes without moving it, butupon the return of the printing-frame the trigger is rigid to thiscontact and thereby swings said crank-arm. 48, Figs. 5 and 6, is aswinging crank, provided on its end with a roller stud 49, which swingsin the plane of the shutter closing lever 37. This crank 48 is carriedby a rock-shaft 50, to which is applied a spring 51, Fig. 5, whichnormally holds the shaft and its crank close up under the body-frametop, in a position out of the way. The rock-shaft passes outwardlythrough one side of the body-frame, and carries on its outer end a crank52, the top of which has a horizontal contact pin 53, Fig. 1, whichprojects into the path of a spring-controlled trigger 54 pivoted on theedge of the printing-frame 5, and mounted to yield in one direction andto be rigid in the other. A description of the operation of thesedevices will now serve to make them clear.

Resuming at the point where the shutters have been thrown open, it maybe stated,

that at this time, the trigger 47 has passed the crank arm 46 withoutaffecting it, and the trigger 54 has also passed the contact pin 53without disturbing it, and has gone a considerable distance beyond saidpin. Now, upon the return of the printing-frame, when the exposure iscomplete, the now rigid trigger 47 immediately contacts with thecrank-arm 46, thereby turning its rockpin 45 on its axis. This has theeffect of throwing over the crank-arm 43 on the lower end of therock-pin, and said arm bearing against the stud 44, Fig. 5, on theslide-bar 41, moves said bar over, which thereby swings its connectedtrip-lever 40 with the effect of releasing the catch-shoulder 39 of saidlever from its engagement with the closing lever 37, as seen in Fig. 11.This latter lever being now free, will, under the power of its spring 38swing upwardly. In this movement, bearing under the arm 29, it will liftthe connecting link 28 to its limit, thereby closing the shutters. Afterthis is done, the now rigid trigger 54 reaches and comes in contact withthe pin 53 of the crank 52. It movessaid pin along through an extensivearc, until at its limit the pin slips under the trigger and trees itselfand returns. But in the meantime the movement of the pin has, throughthe crank 52, rocked the shaft 50 which movement of the shaft throws itsinner crank 48 down. The roller 49 of this crank 48 bears upon theclosing lever 37 and forces it down to its limit, where it isautomatically caught and held by the shoulder 39 of the triplever 40,Fig. 6. Thus the shutter-closing lever 37 is reset, and is moved downout of the way of the shutter opening devices. All the parts are now intheir initial position, ready for a repetition of the operation.

Thus far it has been assumed that the time of exposure, that is, thetime during which the shutter-leaves are open is determined in anymanner, as, for example, by counting. This is quite practical, with anexperienced operator, but if, for any reason, the time of exposureshould be kept constant, I provide the following time attachment whichmay be used or not as circumstances require: Secured to the body frameis a clock-work mechanism indicated generally at 55, Figs. 1 and 5. Thespring-carrying arbor 56 of this mechanism, carries at one end a crank57 to which is pivoted a spring controlled. arm 58 which is moved by thearbor in a path adapting it to contact with a stud 59 on the outer endof the slide-bar 41, Fig. 5, of the shutter closing mechanism. Thepivoted arm 58 yields in one direction but is rigid in the other. Theother end of the arbor 56 carries a crank lever 60, which passesthrough, plays in, and is limited by a slot 61 in a-flange 62 of thebody frame, Figs. 7 and 8. The free end of the crank lever 60, lies inthe path of a spring-controlled trigger 61 mounted on the printingframe5, said trigger being yieldable in one direction and rigid in the other.62, Fig. 1, is the final arbor of the clock-work gear train, and 63 is afan carried by said arbor. The operation of these parts is as followsThe tendency of the main-spring of the clock-work 55 is to hold thecrank-lever 60 to one limit of its guide slot 61, and in this positionthe mechanism is at rest. When the printing-frame 5 is advanced on itsforward stroke, the first contact is that of the trigger 61 with thecrank-lever 60. The trigger being rigid in this direction, picks up thecrank-lever and forces it over to the other limit of its guide slot. Bythis movement the main-spring is wound, and the arm 58 on the other endof the spring-arbor is slipped by and moved past the stud 59 of theslide-bar 11 without affecting it, as said arm yields in this direction.Now, just as the limit of the 11 rinting-frame stroke is reached and theshutters are opened, as heretofore described, the crank lever 60, onaccount of its air of movement, slips off the trigger 61 and themain-spring sets the clock mechanism in action. The arm 58 now movesinto contact with the stud 59 of the slide-bar 41, and said arm beingrigid in this direction, it moves the slide-bar, with the trippingeffect to close the shutters as heretofore described. The length of timeit takes the arm 58 to reach the slide bar determines the timeof-exposure, and this time is dependent upon rate of movement of theclock-work, and may be varied by the use of different sized fans 68. Theemployment of this timing mechanism in no wise interferes with thedevices for closing the shutters directly by the movement of the print--ing-frame. When not in use the timer is conveniently held out of actionby a locking pin 64, Fig. 7, which crosses the guide slot 61 and holdsthe crank-lever 60 in that end of the slot which allows its end in thatposition to clear the path of the trigger 61. The locking pin 64: isconveniently held in a position to lock the lever, or in position whenpartially withdrawn, to free the lever, by a spring strip (55 which fitseither of two slits 66 made in the pin, Fig. 7 A suitable hinged cover67 is provided for the timer.

In order to provide for a suitable light distributer or equalizer, orvignetter, whether of ground-glass or tissue paper, I have a kit 68.This, as seen in Fig. 12, is a skeleton frame with an inside rabbet 69and an outside rabbet 70, as in Fig. 13. The outside rabbet fits theordinary rabbet of the printing-frame 5 and small spring clips 71 aroundthe edge of the kit serve the double purpose of holding the kit in placeand of holding the negative on the kit surface. Pivoted clips 7 2 on theframe 5, Fig. 1, adapted to overlap the negative, further hold the kitand negative. In the inside rabbet 69 of the kit fits the plate 73,which may be ground-glass or it may be plain glass to serve as a supportfor tissue paper or for a paper vignetter.

A brief resum of the complete operation may now be given.

The body-frame is placed in proper position with relation to the lightemployed. The shutters are closed over the exposure opening, and theonly light admitted is through the red-glass in the sight opening. Thesupporting plate 73 is fitted to'the in.- side rabbet of the kit 68,which is itself fitted to the printing-frame 5. The tissue paper, ifsuch is used, is placed on the plate 73 and then the negative is laid onthe surface of the .kit and there held by the clips 72. The sensitizedsheet is then placed on the negative and immediately the printingframeis moved rapidly over to the right. The pressure-equalizing pad from theroller at once overlies the sensitized sheet, and with the frame and itscontents passes under the pressureplaten. The printing frame near theend of its stroke picks up the platen and moves it through its eccentricarc to effect its pressure. At this time the tripping devices, under thefinal movement of the printing-frame, release the shutters, which flyopen. The exposure is thus made, and upon its completion, theprinting-frame is moved rapidly on its return stroke. This movement ofthe frame operates the tripping devices which throw into action theshutter closing means, and the shutters thus close. Immediatelythereafter, the traveling frame operates the means for resetting theshutter-closing devices, and thereupon the printing-frame reaches itsinitial point, and the exposed sheet is removed; another is substitutedand the operation is repeated. In case the exposure should beautomatically timed, the timing mechanism is thrown into use.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In an apparatus of the class described, abody-frame having near one end a sight opening and near the other end anexposure opening; a normally closed shutter for said exposure opening; aprinting-frame mounted to travel in said body-frame into and out ofregister successively with its exposure and sight openings; ant. meansfor operating said shutter to make the exposure.

2. In an apparatus of the class described, a body-frame having, near oneend a sight opening and near the other end an exposure opening; anormally closed shutter for said exposure opening; a printing-framemounted to travel in said body-frame into and out of registersuccessively with its exposure and sight openings; and means operated bythe moving printing-frame for opening said shutter to make the exposure.

In an apparatus of the class described, a body-frame having near one enda sight opening and near the other end an exposure opening; a shutterfor said exposure opening; a printing-frame mounted to travel in saidbody-frame into and out of register successively with said openings;means operated by the moving printing-frame for opening said shutter tomake the exposure; and means operated by said moving frame to close saidshutter after exposure.

4. In an apparatus of the class described, a body-frame having near oneend a nonactinic sight opening and near the other end an exposureopening; a normally closed shutter controlling the exposure opening; aprinting-frame mounted to travel in said body-frame to successivelyregister with its openings; and means for operating the shutter to makethe exposure.

5. In an apparatus of the class described, a body-frame having near oneend a nonactinic sight opening and near the other end an exposureopening; a normally closed shutter controlling said exposure opening; aprinting-frame mounted to travel in said body-frame to successivelyregister with its openings; and means operated by the movingprinting-frame for opening said shutter to make the exposure.

6. In an apparatus of the class described, a bodyframe having near oneend a nonactinic sight opening and near the other end an exposureopening; a shutter controlling the exposure opening; a printing-framemounted to travel in the body-frame to successively register with itsopenings; means operated by the moving printing-frame for opening saidshutter to make the exposure; and means operated by said moving frame toclose said shutter after exposure.

7. In an apparatus of the class described, a body-frame having anexposure opening; a printing-frame mounted to travel in the body-frameinto and out of register with said exposure opening; a normally elevatedpressure-platen overlying the exposure opening and adapted to receivethe printingframe under it; and means operated by the movingprinting-frame for eifecting the pressure of the platen upon the framecontents while said frame is in register with the exposure opening.

8. In an apparatus of the class described, a body-frame having anexposure opening; a shutter controlling said opening; a printing framemounted to travel in the body frame into and out of register with saidexposure opening; a normally elevated pressure-platen overlying theexposure opening and adapted to receive the printing-frame under it;means operated by the moving printing-frame for opening and closing theshutter; and means operated by said frame for eifecting the pressure ofthe platen upon the frame contents while said frame is in register withthe exposure opening.

9. In an apparatus of the class described, a body-frame having near oneend a nonactinic sight opening and near the other end anexposure'opening; a shutter controlling said exposure opening; aprinting-frame mounted to travel in the body-frame into successiveregister with its openings; a normally elevated pressure platenoverlying the exposure opening and adapted to receive the printing-frameunder it; means operated by the moving printing-frame for opening andclosing the shutter; and means operated by said frame for effectingthepressure of the platen upon the frame contents while said frame is inregister with the exposure opening.

10. In an apparatus of the class described, a body-frame having anexposure opening; an openbacked printing-frame mounted to travel in thebodyframe into and out of register with said exposure opening; a springcontrolled pressure roller carried by the body frame disposed to permitthe moving printing-frame to pass under it; and a pressure-equalizingpad wound upon said roller and secured to the edge of the printing-framesaid pad being arranged to lie upon the frame contents as saidprintingframe passes under the roller on its course to the exposureopening, and to rewind upon said roller as the printing-frame returns.

11. In an apparatus of the class described, a body-frame having anexposure opening; an open-backed printing-frame mounted to travel in thebody-frame into and out of register with said exposure opening; aspring-controlled pressure roller carried by the body frame disposed topermit the moving printing-frame to pass under it; a pressure-equalizingpad wound upon said roller and secured to the edge of the printingframe,said padbeing arranged to lie upon the frame contents as saidprinting-frame passes under the roller on its course to the exposureopening and to rewind upon said roller as the printing-frame returns;and a pressure-platen overlying the exposure opening adapted to receivethe printingframe under it and to press upon the equalizing pad whilethe printing-frame is in register with the exposure opening.

12. In an apparatus of the class described, a body-frame having anexposure opening; an open-backed printing-frame mounted to travel in thebody-frame into and out of register with said exposure opening; aspring-controlled pressure roller carried by the body frame disposed topermit the moving printing-frame to pass under it; a pressure-equalizingpad wound upon said roller and secured to the edge of the printingframe, said pad being arranged to lie upon the frame contents as saidprinting-frame passes under the roller on its course to the exposureopening and to rewind upon said roller as the printing-frame returns; anormally elevated pressure-platen overlying the exposure opening andadapted to receive the printing-frame and its equalizing pad under it;and means operated by the moving printing-frame to eifect the pressureof said platen upon said equalizing pad, while the printing frame is inregister withthe exposure opening.

13. In an apparatus of the class described, a body-frame having anexposure opening; a shutter controlling said opening; an openbackedprinting-frame mounted to travel in the body-frame into and out ofregister with said exposure opening; a spring-controlled pressure rollercarried by the body-frame disposed to permit the moving printingframe topass under it; a pressure equalizing pad wound upon said roller andsecured to the edge of the printing-frame, said pad being arranged tolie upon the frame contents as the printing-frame passes under theroller on its course to the exposure opening and to rewind upon saidroller as the printing-frame returns; a normally elevated.pressure-platen overlying the exposure opening and adapted to receivethe printingframe and its equalizing pad under it means operated by themoving printing-frame to effect the pressure of said platen upon saidequalizing pad, while the printing-frame is in register with theexposure opening; and means operated by the moving printingframe foropening and closing the exposureopening shutter.

14:. An apparatus of the class described comprising a body-frame havingnear one end a non-actinic sight opening, and near the other end anexposure opening, a shutter controlling said exposure opening; anopenbacked printing-frame mounted to travel in the body-frame intosuccessive register with its openings; a spring-controlled pressureroller carried by the body-frame disposed to permit the movingprinting-frame to pass under it; a presure equalizing pad wound uponsaid roller and secured to the edge of the printing frame, said padbeing arranged to lie upon the frame contents as the printing-framepasses under the roller on its course to the exposure opening and torewind upon said roller as the printing-frame returns; a normallyelevated pressure platen overlying the exposure opening and adapted toreceive the printing-frame and its equalizing pad under it; meansoperated by the moving printing-frame to effect the pressure of saidplaten upon said equalizing pad, while the printing-frame is in registerwith the exposure opening; and means operated by the movingprinting-frame for opening and closing the exposure-opening shutter.

15. In an apparatus of the class described, a body-frame having near oneend a sight opening and near the other end an exposureopening; a shuttercontrolling said exposureopening; a printing-frame mounted to travel inthe body-frame into and out of register successively with said exposureand sight openings; means operated by the moving printing-frame foropening said shutter to effect the exposure; means for closing theshutter; and a timing mechanism carried by the frame and set inoperation by the moving printing-frame for actuating the shutter closingmeans upon a predetermined interval.

16. In an apparatus of the class described, a body-frame having anexposure opening; a printingframe mounted to travel in said body-frameinto and out of register with the exposure-opening; a pressure platenoverlying the exposure opening and adapted to receive the printing-frameunder it; a pivoted link suspending said platen; a spring to normallyhold the platen with its suspending link out of perpendicular to saidplaten; stops to limit the upward movement of the platen; and stops onthe platen with which the movingprinting-frame comes in contact to swingthe platen down to its pressure on said frame while registering with theexposure opening.

17. In an apparatus of the class described, a body-frame having anexposure opening; a printing-frame mounted to travel in said body-frameinto and out of register with the exposure opening; a pressure-platenoverlying the exposure opening and adapted to receive the printing-frameunder it; a bracket secured to the body-frame and overlying the platen;a suspending link adjustably and pivotally secured at its upper end tothe bracket and pivoted at its lower end to the platen; a spring actingagainst the platen to normally hold it in a position with its suspendinglink out of perpendicular; stops to limit the upward movement of theplaten; and stops on the platen with which the moving printing-framecomes in contact to swing the platen down to its pressure on said framewhile registering with the exposure opening.

18. In apparatus of the class set forth, a body having an exposureopening and a sight opening adapted to transmit only nonactinic light, aprinting frame mounted to travel in said body into and out ofregistering successively with said exposure and sight openings, apressure platen disposed to receive the printing-frame under it and topress upon its contents while said frame is registered with the exposureopening, and shutter means disposed to close said exposure opening whensaid printing frame is not fully registered therewith.

19. In apparatus of the class set forth, a body having exposure andsight openings, a printing frame mounted to travel into and out ofregistering successively with said exposure and sight openings, apressure platen disposed to receive the printing frame under it and topress upon its contents while said frame is registered with the exposureopening, shutter means disposed to close and open said exposure opening,means whereby the shutter means is held in closed position, and means torelease said shutter holding means when said frame fully registers withsaid opening.

20. In apparatus of the class set forth, a body having an exposureopening, a printing frame mounted to travel in said body into and out ofregistering with said opening, a flexible pressure member secured by oneend to said frame and disposed to press upon its contents while saidframe is registered with said opening and means for turning the oppositeend of said pressure member away from said frame when the latter ismoved from registering with said exposure opening.

21. In apparatus of the class set forth, a

body, having an exposure opening, a printing frame mounted to travel insaid body into and out of registering with said opening, a flexiblepressure member carried by said frame on one end, a guide adapted toturn the free end of said pressure member back when said frame is movedfrom registering with said opening and a pressure element cooperatingwith said pressure member to press the latter upon the contents of saidframe when registered with said opening.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JESSE A. MEISER.

Witnesses:

JOHN S. DEUEL, G. A. MGLEAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

